FOOD CHEMISTRY
·
2023
·
IF 8.8
Zheng Guo,Han-Yi Zheng,Zhong-Ying Huang,Yue-Zhen Liu,Yao-Hua Liu,Yun Chen,Jing Gao,Yong Hu,Chao Huang
A ternary deep eutectic solvent (DES) consisting of choline chloride, lactic acid, and urea in a molar ratio of 1:2:2 was used to pretreat chamomile residue, followed by carbon dots (CDs) preparation using a one-pot solvothermal method . The CDs prepared under the suitable conditions had a high quantum yield of 47.34% and could be used as a bifunctional fluorescent probe for the detection of tartrazine and Fe(III). The concentration of tartrazine or Fe(III) had a good linear relationship with the fluorescence intensity of CDs that the determination coefficient ( R 2 ) was 0.9957 and 0.9943, and the limit of detection (LOD) was 40 nM and 119 nM, respectively. After verifying the different fluorescence quenching mechanisms of CDs by these two substances, a quantitative analysis was performed on real samples with recoveries of 90.70%∼104.29%. Overall, this study provided a promising technology for chemical conversion from low-cost chamomile residue to attractive bifunctional fluorescent probe.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2014
·Vol. 161
·期 9
·H453
·
IF 2.859
Jing Zhang,Xue Wang,Shibo Zhang,Wenchang Wang,Masashi Hojo,Zhidong Chen
A novel electrochemical sensing platform was designed for simultaneous determination of Ponceau 4R and Tartrazine using an ionic liquid modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite composite (IL-EG) with solid paraffin. Based on the advantageous functions of IL and EG, IL-EGPE showed excellent electrocatalytic activity toward the simultaneous oxidation of Ponceau-4R and Tartrazine. Due to the electrocatalytic activity to Ponceau-4R and Tartrazine, a sensor for Ponceau-4R and Tartrazine was constructed based on IL-EGPE. Under optimal experimental conditions, the designed sensor exhibited wide linear responses to Ponceau 4R and Tartrazine ranging from 1.0 × 10−8 to 5.0 × 10−6 mol/L and 1.0 × 10−8 to 2.0 × 10−6 mol/L, respectively. The detection limits for Ponceau 4R and Tartrazine were 1.4 × 10−9 mol/L (0.85 ng/mL) and 3.0 × 10−9 mol/L (1.6 ng/mL) at a signal-to-noise ratio of 3, respectively. This sensor showed good reproducibility, stability and reusability. The proposed sensor was successfully applied in the simultaneous determination of Ponceau-4R and Tartrazine in soft drink with satisfactory results.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Meiling Wang,Jianwei Zhao
A new facile in situ reduction approach for the preparation of an ionic liquid of 1-allyl-3-methylimidazolium chloride (AMIM-Cl) functionalized reduced graphene oxide supported Au nanoparticle (ILRGO-Au) composite was demonstrated in this work. With the assistance of AMIM-Cl, ILRGO were dispersed easily in aqueous solution and exhibited an improved conductivity. Meanwhile, the Au nanoparticles uniformly loaded on the surfaces of the ILRGO which can increase the specific surface area as well as accelerate electron transfer. These advantages made the ILRGO-Au composites were successfully employed in the fabrication of facile and sensitive electrochemical sensor applied to the simultaneous determination of Sunset yellow (SY) and Tartrazine (Tz) in drinks. In the presence of constant concentration of one of the components, the concentrations of SY or Tz gave linear response ranges equal to 4.0 × 10 −9 to 1.0 × 10 −6 for SY and 7.0 × 10 −9 to 1.5 × 10 −6 M for Tz with detection limits of 5.2 × 10 −10 for SY and 8.3 × 10 −10 M for Tz (S/N = 3), respectively. The new sensor showed good reproducibility and repeatability toward simultaneous determination of SY and Tz, indicating its potentials in detection of other food colorants.
研究领域:
分析化学
·
纳米材料科学
·
食品检测
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Lichun Fu,Tao Jin,Ruixuan Hu,Yuwei Pan,Yingjie Zhao
In recent years, dye wastewater caused serious effects on environmental ecology and human health. Thus, in the present study, hydroxylamine (HA) was used to improve the Fe 3 O 4 /H 2 O 2 process for removing the typical dye pollutant (tartrazine). Only 2.8% tartrazine could be removed in Fe 3 O 4 /H 2 O 2 system within 60 min at the reaction of 1 g/L Fe 3 O 4 , 1 mM H 2 O 2 , and pH 4 while 97.5% tartrazine could be removed within 20 min after adding 1 mM HA into the Fe 3 O 4 /H 2 O 2 system. Compared with Fe 3 O 4 /H 2 O 2 system, the removal rate for removing tartrazine in Fe 3 O 4 -HA/H 2 O 2 system could enhance more than 100 times. Electron paramagnetic resonance tests (EPR), radical quenching experiments and quantitative determination demonstrated that • OH was the major reactive species for removing tartrazine in Fe 3 O 4 -HA/H 2 O 2 system and • OH produced concentration in Fe 3 O 4 -HA/H 2 O 2 system was also much higher than that in Fe 3 O 4 /H 2 O 2 system. The key factors affecting tartrazine removal in Fe 3 O 4 -HA/H 2 O 2 system were also conducted. The optimal HA dosage, Fe 3 O 4 dosage, and H 2 O 2 dosage was 1 mM, 1 g/L and 1 mM. The optimal initial pH in Fe 3 O 4 -HA/H 2 O 2 system was 3, but compared with Fe 3 O 4 /H 2 O 2 system, the tatrazine removal efficiency could significantly improve under any initial pH condition. Fe 3 O 4 -HA/H 2 O 2 process had strong adaptability to inorganic ions and good applicability to different pollutants. Fe 3 O 4 -HA/H 2 O 2 process also exhibited good recycle ability for tartrazine removal. Overall, Fe 3 O 4 -HA/H 2 O 2 process is an effective and good practical applicability approach for dye wastewater treatment.
研究领域:
环境科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Meiling Wang,Mingzhu Cui,Weifeng Liu,Xuguang Liu
Conductive polymer hydrogels (CPHs) have exhibited great potential as advanced material for sensing. Here, a facile approach to 3D networked polypyrrole (PPy) hydrogel is reported. This strategy relies on the doping of the azo dye molecule Tartrazine during the synthesis of nanostructured conductive PPy hydrogel. The prepared PPy hydrogel can be highly dispersible in the mixed solvent of isopropanol/H 2 O (4/1). The unique 3D network nanostructure endow PPy hydrogels with high electric conductivity and effective interface area for enhanced sensing performance towards the simultaneous determination of ascorbic acid , dopamine and uric acid with respective lower detection limits of 1.283, 0.044 and 0.046 μmol L −1 . The as-designed electrochemical sensor also exhibited excellent stability and reproducibility.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Shanshan Wu,Zheng-Zhi Yin,Xiaohui Chen,Xueqing Wang,Datong Wu,Yong Kong
Poly(melamine) (PMel) was synthesized via the electropolymerization of melamine monomer, which was then characterized by field-emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The possible polymerization mechanisms of melamine were also revealed by FT-IR spectroscopy and UV–Vis spectroscopy. Next, the PMel modified GCE (PMel/GCE) was used for the simultaneous determination of nitrite (NO 2 − ) and tartrazine, and the parameters were optimized. The kinetic study showed that the electrochemical oxidation of nitrite and tartrazine at the surface of PMel/GCE is a typical surface-controlled electrode process. Under the optimun conditions, the developed sensor outperformed those previously reported, and it also exhibited high selectivity and reproducibility. Finally, the PMel/GCE was used for the simultaneous determination of nitrite and tartrazine in foodstuffs, and the results indicated that the proposed sensor could be a promising candidate for accurate determination of nitrite and tartrazine in real food samples.
研究领域:
分析化学
·
电化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Zhen Hu,Fei Lu,Yingying Liu,Lei Zhao,Long Yu,Xirong Xu,Weihao Yuan,Qian Zhang,Yudong Huang
A metal–organic framework (MOF)-mediated adsorption strategy is first developed for improving the anti-ultraviolet (UV) properties of poly(p-phenylene benzobisoxazole) (PBO) fibers. In this work, UIO-66 was successfully anchored onto the surface of PBO fibers by one-step microwave-assisted heating method. The experimental results showed an obviously enhanced surface energy (91.1%), roughness (268.4%), interfacial shear strength (49.0%), and anti-UV properties (66.7%) compared to pristine PBO fibers. The anti-UV dye (tartrazine) was further immobilized onto the surface of PBO fibers via an adsorption strategy mediated by UIO-66. Interestingly, the PBO@tartrazine fibers demonstrated superior anti-UV performance (further up to 81.5%) compared to PBO@UIO-66 fibers. The extraordinary anti-UV properties of PBO@tartrazine fibers could be rationally ascribed to the synergistic effects of UIO-66 and tartrazine molecules. Considering the diversities and functionalities of MOFs and targeted materials, our work indicates that the MOF-mediated adsorption strategy would promisingly endow PBO fibers with other desired performance and applications such as solar–thermal transition and self-healing abilities.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2019
·
IF 2.584
Yubing Zhou,Yuancheng Qin,Weili Dai,Xubiao Luo
The roles of benzoic acid and its derivatives in the photocatalytic degradation of tartrazine (TZ) by titanium dioxide have been studied. A series of comparative experiments were carried out, such as the experimental comparisons of concentrations, pH values, effects on the para-position of benzoic acid, gas atmospheres, and different target pollutants. It should be noted that the degradation rate of TZ solution without benzoic acid and benzoic acid after degradation for 90 min was 28.69 and 99.08%, respectively. The reason for the above results is that benzoic acid acts as an electron donor to react with photogenerated holes, suppressing the recombination of photogenerated holes and electrons, and thus causing a significant increase in the degradation rate. Moreover, the degradation process is mainly induced by O2•– and photogenerated holes (h+). It is the first time that the benzoic acid/TiO2 system has been used to degrade the TZ dye. In addition, the benzoic acid/TiO2 system is also suitable for the degradation of other organic dyes such as methyl orange, rhodamine B, methylene blue, and methyl violet.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materia-Rio de Janeiro
·
2024
·
IF 0.5
Dai Jun,Liu Yunzhao,Jiang Erhu
Tartrazine (Tz) is a widely used synthetic food colorant that has raised health concerns due to its potential adverse effects. Developing sensitive and reliable methods for Tz detection in food products is crucial for ensuring consumer safety. In this study, Sr-doped ZnO nanoparticles with varying doping levels (0–7 mol%) were synthesized by mechanical milling and applied as an electrochemical sensor for detecting Tz in sports drinks. The ZnO-Sr modified carbon paste electrode (CPE), with an optimal Sr doping level of 5 mol%, exhibited the best sensing performance under optimized conditions of pH 7.0 and an accumulation time of 180 s. The sensor demonstrated a linear range from 1 to 1000 μM, a detection limit of 0.3 μM, and a sensitivity of 0.38 μA/μM for Tz identification. This performance surpasses that of many previously reported electrochemical Tz sensors. The ZnO-Sr modified CPE showed good reproducibility (RSD 3.2%), long-term stability (91.2% current retention after one month), and high selectivity against common interferents. The sensor’s practical applicability was validated by determining Tz in commercial sports drink samples, with results in good agreement with a standard UV-Vis spectrophotometric method (relative errors < 5%). Recovery tests (97.2–103.5%) further confirmed the accuracy and reliability of the proposed sensor. This work presents a simple, sensitive, and reliable approach for monitoring Tz levels in food products, addressing important food safety and human health concerns.
研究领域:
食品科学
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Junhua Li,Mengqin Liu,Jianbo Jiang,Beibei Liu,Haixia Tong,Zhifeng Xu,Chunming Yang,Dong Qian
In this work, we demonstrate the morphology-controllable syntheses of CuS crystals by a facile hydrothermal/solvothermal method through merely changing the reaction solvents without employing any surfactants, templates or structure-directing agents. The dependence of electrochemical sensing properties for tartrazine (TT) and sunset yellow (SY) on the morphologies of CuS crystals (microspheres, hexagonal microsheets, sandwich-like plates, interlaced nanosheets and nanoflowers) was studied by voltammetric techniques. Among these CuS structures, the CuS nanoflowers constructed by textile-like nanosheets with a three-dimensional (3D) hierarchical porous structure hold the largest Brunauer–Emmett–Teller specific surface area (37.12 m 2 g −1 ) and display the highest electrocatalytic activities to the TT and SY oxidations. Consequently, the CuS nanoflowers modified electrode exhibits outstanding electrochemical sensing performances, i.e. high sensitivities of 1.7331 and 0.2260 A M −1 for TT, and 0.4228 and 0.01564 A M −1 for SY, low detection limits of 0.012 μM for TT and 0.006 μM for SY, and satisfactory recoveries of 97.0–104.5% for TT and 99.0–105.0% for SY. Simultaneously, it also features excellent anti-interference, stability and reproducibility. The superior sensing performance of CuS nanoflowers may benefit from its unique 3D hierarchical porous architecture, which can facilitate the electrolyte infiltration and promote the active material utilization efficiency. Based on these findings, we can draw a reasonable conclusion that CuS with a flower-like structure is promising electrocatalysts for efficiently sensing TT and SY.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
Analytical Methods
·
2013
·Vol. 5
·期 4
·925-930
·
IF 1.855
Yajing Lei,Shujie Zhang,Lizheng Fang,Muhammad Sajid Hamid Akash,Weixing Shi,Kedan Sun,Yingchun Xu,Shuqing Chen
Tartrazine is commonly used in foodstuffs, its level is controlled by government, however, it is still used in some food products at levels which are not permitted. We aimed to develop a sensitive and simple method to assess the exposure to tartrazine in pregnant women and the general population in China. A competitive enzyme-linked immunosorbent assay (ELISA) was developed based on polyclonal antibodies for tartrazine. Using this assay, we measured the urinary concentrations of tartrazine in the participants. Under optimal experimental conditions, the standard curve was constructed at concentrations of 0.04–1000 ng mL−1 and the limit of detection (LOD) was set at 0.04 ng mL−1. No cross-reactivity of the antibody was observed with seven other artificial dyes based on this assay. Human blank urine was spiked with tartrazine at concentrations of 0.1, 25, 500 ng mL−1 and analyzed by ELISA, the recoveries of tartrazine were from 99.8% to 106.6% and coefficients of variation were from 3.28% to 14.9%. The study comprised of 351 volunteers (age: 19–69 years), of which 30% were male, 16% were nonpregnant women and 54% were pregnant women. The geometric means for tartrazine in three groups were 2.64, 2.44 and 3.21, respectively. No difference was observed in these groups. The values indicated that both the general population and pregnant women are exposed to tartrazine. Sources of exposure, potential health effects and risk assessment require further investigation.
研究领域:
毒理学
·
环境健康
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 10
·4756-4761
·
IF 3.925
Liping Lin,Qiaoling Zheng,Qiushuang Chen,Meng Fang,Qingjiao Lai,Xinghao He,Jinying Qin,Zu-jin Lin,Rongguang Lin
Fluorescent polydopamine nanoparticles (PDA NPs) have been effectively synthesized by means of self-polymerization of dopamine under the strong alkaline condition of ethylenediamine at room temperature for 2.5 h. The obtained PDA NPs displayed excellent optical properties under the conditions of high ion strength and wide pH range. Utilizing the fluorescent signal of PDA NPs, a fluorescence turn-off sensor for tartrazine detection is proposed. The fluorescence signal changes linearly depending on the tartrazine concentration range of 1.5–45 μM, and a detection limit of 0.55 μM was obtained. The mechanism studies showed that the fluorescence quenching procedure is ascribed to the combined effects of the inner filter and the generation of non-fluorescent ground state complexes between PDA NPs and tartrazine via strong electrostatic interactions. The satisfactory results of the proposed sensor when applied to tartrazine detection in soft drinks and candies promise its practicality for real food samples.
研究领域:
分析化学
·
纳米技术
·
食品科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）